珠江三角洲鼠类群落的栖息空间分布

On the Habitat Space Disposition of Farmland Rodent Communities in Pearl River Delta

本文研究农田鼠类群落的空间分布,选择四种农田类型:稻田、蕉田、山坡果园和菜田。研究结果表明稻田和蕉田主要以黄毛鼠和小家鼠为主;山坡果园以小家鼠为优势种;菜田主要以小家鼠和褐家鼠为主。同时分析了各群落的物种多样牲,认为群落A(即稻田和蕉田)全年物种多样性无明显变化,均匀度冬季表现极不均匀。群落B(即山坡果园)物种多样织和均匀度指数较低,全年均以小家鼠占优势。群落C(即菜田)不同季节物种均匀多样性和度指数变化不明显。

The habitat space disposition of farmland rodent communities in Humen Region, Pearl River Delta was Studied. The four farmland types were selected, namely: rice feid, banana field, hillside orchart field and vegetable field. In this paper, the species diversities of rodent community were calculated based on the data from field observation, Rattus rattoides and mus musculus were the dominant species in rice and banana field. Mus musculus was the dominant species in hillside orchart field. According to the data, we proposed three rodent communities of farmland. A was Rattus rattoides+Mus musculus community in rice and banana field. The species diversity index of community A showed no significant change throughout the year. But evenness was more change in winter. B was Mus musculus community in hillside orchart field. The species diversity and evenness index of community B was lower. Mus musculus was all dominated in whole year. C was Mus musculus+Rattus norvegicus community in vegetable field. The species diversity and evenness index of commuity C changed no significant at different seasons.